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0. J. MARSHICK.

ELECTRlC REVERSING MECHANISM. APPLICATION FILED 1uLY x2. 1919.

1,364,507, Patented Jan. 4,1921.

2 SHEETSSHEET l.

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By W.%MM wwwem lvl/S HTTOKNEY' 0. J. MARSHICK.

ELECTRIC REVERSING MECHANISM. APPLICATION FILED JULY 12.1919.

1,364,507. Patented Jan. 4, 1921.

v 2 SHEETS- S HEET 2- HIS f7 TTOKA/EY.

I section, of the same, reference being had to rotatable furnace drum, with the line 3.3 of Fig 2 PATENT OFFICE.

OLIVER J. MARsHIcK, or DETROIT, MICHIGAN.

ELECTRIC REVERSIN G MECHANISM.

Application filed July 12,

clear, such as Wlll to which mg "drawings, which form apart of this specificatio I -'s invention relates to reversing mechanism especially adapted for metal treating rnaces of the rocking or rotating type, and as for its object an improvedarrangement of parts whereby the direction of rotation of the' furnace drum is automatically redegree of rotative movementof'the drum, as, or example, during various stages n the process of melting, or when the emptying of the furnace drum through the desired. Th

to other uses, as for example, ofa churn, a tumbling l, or a washing machine and I desire the scope of this CllS- closure to be considered accordingly. In the drawings: Figure 1 is an end elevational view of a my improved reversing mechanism inposition with respect thereto.- Y

ig. 2 is an proved mechanism, removed from the hown in section only about the edges of the figure. v

ig, 3 is a sectional elevation, taken along Fig. 4 is a sectional detail of one ofthe spring latch or pinmembers bywlnch the iting switch arms are held in desired reto the 'inclosing casing and to one lation I another.

13 represents a'refractory 'lined furnace In, about Whose periphery engage track" members 14,. which rest upon the complementarily positioned roller ,members 15, journaled in the pivoted brackets 17* which rise from the struts 17 The furnace drum Specification o'f ietters Patent,

' against the ad ustable stop a sleeve 37 which rotatab Patented Jan. 4;, 1921. 191a. Serial No. 310,443.

is also encircled by the toothed rin 16- Which is a 7 7 whose supbcarlng or pin 19 is fixed near the one of the side plates of the he casing 20 'is supto these parts by the branch strut 21.

he teeth of the large gear wheel 22 within the shell 20 mesh with those of the 1 ler pinion 18, the gear wheel being rota-' tably journaled adjacent one of. the side'covering plates of the casing 20, on

access to the afforded by the l by the removal of plates of the shell relative y exposed wheel 22.

are a pair of arm 26 bein arm '36 rises from y engages thereabout. Connected with the outer end of the shaft 23. and sleeve 37 respectively are external adjusting arms, 26 and 36 in some one of the are adapted 'to engage ad acent'outer face series of holes 27 in the of the casing. v o the interior arms 26 and 36 respectively is journaled the shaft 29 (or 39) of the forked jaw member 30 (or so positioned as to its distance from the central aXis of the large gear wheel 22 rotates sufficiently in either direction, one

or the otherof them will be engagedby the,

stud 25. he arms having b "as to the series-of holes 27 that when either one-of these forked jaw members 30 or 40 f serves to carry g gear wheel 22 and consequently its stud25 slightly farther, The first tiltingof the forked jaw member about its axis will result in turning away the drum contact 31 thereof about the axis of the shaft 29 connected, either dithe spring held stop pins 28 and 38 of each of which the momentum or the lar e iinged door 24:, or if desired, 1

2 t emes as a center. from contact with. the first set not functionally active while the mechanism of contact fingers 32 (or 42) and this further is being operated under the control of a hand swing of the large gear wheel 22 serves to switch, are often useful in the capacity of turn the forked jaw member still farther limiting switches, serving to prevent dam- 5 about its axis until its'drum contact 31 (or age to the mechanism in case the attendant 7o 41) engages the second set offingers 33 (or neglects to stop the pouring'switch contact d3), when the restoration of the jcircuit?s at just the proper time. completeness being efiected, (though through \Yhat I claim is: a a different wire path) the rotative travel of 1. In a reversing mechanism, in combina- 10 the parts in the opposite direction is begun; .tion with a pair of adjustable limiting inem- 75 This continues until thefswing of the large bers, a plurality of diversely'connecte congear wheel 22 causes the stud 25 to 'engag; tact members carried by each of said imit the other one of the forked jaw members 3() ing members, a rotatable member operatively or 40 from the" last engaged y it, when the connected \viththe mechanism whose inter-1 same breaking of one set of contacts and mittent reversal of movement is desired, and to making of another set creates a newpath for, means carried by said rotatable member in and direction of, the actuat ng current, position to engage saidlimitiiig members at which starts the train of gear wheels-in roeach end of its inteiided'pathof travel, there- 1 .tation in the opposite direction'once more. by-eiiectinga i'e-ar'rangemen of the electrical The size of the are: thus traversed is detercircuits of which said contact members are. 85

mined by the angular distance'between the parts.

a two radial arms 26 'and 36, which in turn is 2. In a reversing mechanism, the combimanually regulated, by the osition ing in nation of a rotatable nieinber operatively' the holes of the are 27 ofthe spring he d connected with an external member, a pairpins 28 and 38in the ends of the outside, ofpivoted arms capable of adjustment is so adjusting'a m -When the'metal compoto each other and to the mechanismas a r S 1 l I nents are firstput iritothefurnace,andbeiore whole, .a plurality of circuit terminals carthey are even partly molten, I 'oiten findjit riedv on each .of said pivoted arms, and a advantageous to permit a: much shorter arc rockable-member carried by each of said piv- 30 of oscillation than when the contents of; the oted arms in position to be engaged by a 95 furnace drum are relatively fluid. Ordiprojecting portion-of said rotatable member narily an oscillation of not to exceed about at each, end of its intended'path of travel,

170 is the maximuinthat, is desirable, 'exthereby breaking its previous contact with cepit when the molten metal is ready or certain of said circuit terminals'and' making pouring, when itbecomes desirable to turnv contacts with others. 1 0 the furnace so far over that the pouring 3; In a reversing mechanism, the combispout gradually approaches'thevery b0 natioin-with an oscillatory member operatom; The position orspread of the adjust-- tively connected w1th an external member 'ing radial arms 26 and 36hr this pouring whose limited rocking isdesired, of apair of 40 o ition may be. roughly said to be the are. ad ustablecontac't members each capable of 105 of 270"- indicatedby the presence otthe holes lim ted rotative movement when engaged by 27in Fig. 1, whereas the extreme oscillatory said oscillatorymemben; and -a plurality of swing for the peri d (pf-"melting would be circuit terminals appurtenant to each of said represented by 'slig tl'y. less .'than the 180 ad ustable contact members, certa n of which 1 ing. above the horizontal diametri'c'al line. are adapted to be renderedfinactive and the-lit 7. he tiltingoi the furnace ior'this pouring 'previo'usly inactive jothe'rs at which are 0 eration maybeefiected by the pos tioning adapted to belt-planed :in'figifnulflbj$1181 of these radial arms as just describe and 1g"agexnient thereagainst'of their contact memallowing the furnace to swing to thi'sjliinit er-when-roc ked j I j I 1 5o accordingly, or by. butting ofi the alterna't- 4; A'IfBV BlSIIXgmBChaIHSm, hav ng in com- 1] 'ing mechanism entirelyand resorting tothe 'bination-a'pairlot adjust-able.stopmeinbers, use of a hands witch. v support ng memberstherefor in whose ends Each set "of'contact brushes has insulated ,sa d' stop nembe rs-a're journaledin position wires "leading f a e-it to the switchboard for. limited rotati've moyement,." .a-. plurality through some'o'n-e i the" binding posts 3 t.- o f series Oi /(illcllit terminals certain of 1 And, if'desire'd, asu table number t insnlatwhich are' adapted to; berendered inactive ingshields Ainay be arrang. diaboiit the land-certain others-goiiwhich are adapted. to shaft'23'so as to space from one anothenand. be placed-in circu t bYiihilOCklIlgiIlOYQIl'lQl'lb thus more effectively-insulate, the"cur 'ent' oi'their' afacent' toplmembe'rs, and rotawires 35 andezi from oneanother as they table member operatively connected with an lead -from' the terminals-oi their respective external mechanism, adaptedto travel along brushes toward some one ofthe several bind a-path whose 1i its are determined by the,

ing posts 3t,'and ,thence to the several coj ie'. QOSttiOIlS pfsaid stop members and upon entrol switches with which the actuating motor gaging "W1l2l l; either to actuate t relatively to is connected. The jaw members ,3 and-{40" its neighbor ngc rcuit-terminals.

5. A reversing mechanism, having,in comcircuit terminals appurtenant to each of bination with a plurality of stop members, said stop members, certain of each set being radially arranged support members wherein vnormally in circuit with their stop member 25 said stop members are journaled, a pluand being adapted to be disconnected there- 5 'rality of circuit terminals certain of which from and connected with the normally inare normally in contact with one or the other active members of the set when the stop of said stop members and certain others of member is engaged by the oscillatory enwhich are adapted to be placed in circuit in gaging member. I 30 succession to the first named series when 7. In a reversing mechanism, the combina- 10 their stop member is actuated, and an osciltion of a plurality of series of circuit termilatory engaging member operatively. connals, a pair of adjustable stop members with nected with an external mechanism, adapted one or the other of which each circuit termito touch one of said stop members near each nal is associated, and an oscillatory member 35 end of its possible'path of travel, thereby adapted to engage said stop members alter- 15 actuating it relatively to its neighboring cirnatingly, thereby effecting a rearrangement cuit terminals. 1 of t eir circuit connections.

6. In a reversing mechanism, the combina- In testimony whereof I- sign this specifition, with an oscillatory engaging member cation in the presence of two witnesses. operatively connected with an external mech- OLIVER -J. MARSHICK.

20- anism, of a'pair of oppositely disposed mov- Witnesses:

able stop members capable of individual ad- WILLIAM M. SWAN,

justment as to position, and a plurality-of JEFFERSON G.'Tmmsan. 

